we've got a problem with buttons created by "navto" command, when it's targeting a different indesign article which contains a lot of other buttons, it reacts with noticeable delay (like 3 sec and then it starts loading the page). It depends on number of buttons in the arcticle we want to switch in not the overall size of the file (it could be 2 times larger with no difference).

But when we tested it in folio viewer on PC or on Android OS it worked perfectly fine. Only iOS (iPad) suffers from this.

How many buttons are on the target page? Can you e-mail me a copy of the source and destination InDesign documents so I can pass them to our testing team? It may take a bit, but they'll look at them and if we have a performance problem in this situation will open a bug so we can address it in a later release.

Thanks for you response, on the target page is 5 buttons. If you're interested we could email you an access to the folio of the project. Or if it wouldn't be helpfull we'll send you the entire source and destination docs.